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Message-Id: <162756764934.301564.7514914520658490663.stgit@devnote2>
Date: Thu, 29 Jul 2021 23:07:29 +0900
From: Masami Hiramatsu <mhiramat@...nel.org>
To: Steven Rostedt <rostedt@...dmis.org>,
Josh Poimboeuf <jpoimboe@...hat.com>,
Ingo Molnar <mingo@...nel.org>
Cc: X86 ML <x86@...nel.org>, Masami Hiramatsu <mhiramat@...nel.org>,
Daniel Xu <dxu@...uu.xyz>, linux-kernel@...r.kernel.org,
bpf@...r.kernel.org, kuba@...nel.org, mingo@...hat.com,
ast@...nel.org, Thomas Gleixner <tglx@...utronix.de>,
Borislav Petkov <bp@...en8.de>,
Peter Zijlstra <peterz@...radead.org>, kernel-team@...com,
yhs@...com, linux-ia64@...r.kernel.org,
Abhishek Sagar <sagar.abhishek@...il.com>,
Andrii Nakryiko <andrii.nakryiko@...il.com>
Subject: [PATCH -tip v10 10/16] ia64: Add instruction_pointer_set() API
Add instruction_pointer_set() API for ia64.
Signed-off-by: Masami Hiramatsu <mhiramat@...nel.org>
---
Changes in v9:
- Fix "space at the start of a line" checkpatch warnings.
Changes in v4:
- Make the API macro for avoiding a build error.
---
arch/ia64/include/asm/ptrace.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/ia64/include/asm/ptrace.h b/arch/ia64/include/asm/ptrace.h
index 08179135905c..8a2d0f72b324 100644
--- a/arch/ia64/include/asm/ptrace.h
+++ b/arch/ia64/include/asm/ptrace.h
@@ -51,6 +51,11 @@
* the canonical representation by adding to instruction pointer.
*/
# define instruction_pointer(regs) ((regs)->cr_iip + ia64_psr(regs)->ri)
+# define instruction_pointer_set(regs, val) \
+({ \
+ ia64_psr(regs)->ri = (val & 0xf); \
+ regs->cr_iip = (val & ~0xfULL); \
+})
static inline unsigned long user_stack_pointer(struct pt_regs *regs)
{
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